/Engine/Source/Runtime/MovieScene/Public/Channels/MovieSceneFloatChannel.h
Populate the specified array with times and values that represent the smooth interpolation of this channel across the specified range
void PopulateCurvePoints ( double StartTimeSeconds, double EndTimeSeconds, double TimeThreshold, float ValueThreshold, [FFrameRate](API\Runtime\Core\Misc\FFrameRate) TickResolution, [TArray](API\Runtime\Core\Containers\TArray)< [TTuple](API\Runtime\Core\Misc\TTuple)< double, double >> & InOutPoints ) const